The ELECOM M-IR07DRS is a compact, eco-efficient wireless mouse designed for ultimate stealth and longevity. Featuring an advanced IR LED sensor, it boasts an incredible battery life of up to 2.5 years on a single AA battery, while its silent-switch buttons ensure quiet operation in noise-sensitive environments like libraries or offices. The symmetrical, medium-sized (M Size) design offers ergonomic comfort for both left and right-handed users, and the 2.4GHz USB receiver provides a stable, "plug-and-play" connection that stores neatly inside the mouse for easy portability.